Astro - Solar Hour

Astro renders your real sky right now, from your exact location, as a living, cinematic backdrop. No clutter. No alerts. Just light, time, and landscape.

Astro is a minimal solar clock that turns your iPhone into a window on the sky. Powered by live GPS and real sunrise/sunset data, it renders a time-reactive sky — shifting continuously across 17 hand-crafted colour stops from deep indigo at midnight to warm coral at dawn to cerulean at noon to violet dusk.

At the heart of the display, a live sun or moon traces its true elliptical arc across layered landscape silhouettes inspired by the visual worlds of Alto's Adventure and Firewatch. Tilt your phone and each plane of the landscape shifts with real gyroscope parallax — near ridges move faster than far peaks.

Drag the scrubber to preview how the sky will look at any moment of the day, then tap LIVE to return to now. Astro shows you the next golden hour window and the blue hour that frames it — the exact minutes photographers and wanderers chase.

Time-reactive sky — 17-stop palette shifts continuously across the full 24-hour cycle Live solar arc — sun and moon positioned mathematically from real-world sunrise/sunset data Golden & Blue Hour — next upcoming windows calculated and displayed at a glance Gyroscope parallax — 4-plane landscape responds to how you hold your phone Time scrubber — explore any moment of the day; snap back to now in one tap No distractions — no notifications, no widgets, no data collection. Just sky.